What I can't figure is why anyone would want to risk a stable computer setup with an early release into the complete unknown, possibly ending in disaster as many M/S systems have been wont to do.
Unless you are on XP and worried about them cutting off support, anything later have all been fraught with a series of calamities.
I have MS 8.1, which took a couple of weeks to get rid of it's mobile phone appearance and numerous other annoyances, and get it set up in a way that was at least useful. Still no answer to it's predilection for saving to "somewhere" invisible in a cloud by default.
An operating system is merely the workbench on which your useful tools reside.
To date M/S still can't decide whether to replace IE11 with Edge, Spartan, or just keep IE11 "temporarily".
Frankly, best wait till Sept 2016 (free until then) before making any decision, to at least give M/S the chance to fix the many problems still being reported and with updates on an almost daily basis.